Frequencies for first 10,000 rows of xtrcrprl_shck_lthtrptr_srvc_cd variable in

  Services: |
  ESWL Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,592       85.92       85.92
          0 |      1,233       12.33       98.25
          1 |         42        0.42       98.67
          2 |         92        0.92       99.59
          3 |         41        0.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016